An online introductory probability course covering the core concepts of probability theory, hosted on probabilitycourse.com. Commenters point to it as a free resource for learning probability from a math background.

A commenter says they are working through it themselves for probability while rusty on college math, and lists it alongside Khan Academy and Andrew Ng's Coursera course.

What commenters said (1)

1. Recommendsshriek2018in “Ask HN: What technologies did you learn in 2018?”

   I'm same as you too but I did have some background in math from college but I've been rusty on them already.

   - I know it's said over and over again but KhanAcademy is pretty good for high-school math - For probability, I'm also going over this website[1] at the moment. Maybe someone else has other recommendations too - Linear Algebra is next on my list but others have given some reference for it already - Andrew Ng's course on Machine Learning from Coursera is also another frequently recommended if you are trying to learn math for it

   [1] https://www.probabilitycourse.com/

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